Adrenaline Injector duration is way too short for how mediocre it is

Especially if you want us to get kills with it...trying to unlock the Deploy Beacon and if you want the kills to count you need to practically inject yourself AFTER you've seen the enemy. I've already gotten myself killed multiple times because of the animation. I seriously don't see myself using this skill EVER after unlocking the beacon outside of traversal, where I know someone won't peak out at me while I'm injecting. The opportunity cost is HUGE for a tiny benefit in a tiny window. If someone peaks after I try to use the skill, I'm dead. And its short duration encourages you to run in wildly hoping to find someone before it runs out if you want to unlock the beacon. Really frustrating gadget, double its base duration please.